Well mechanism.



M. E. LAYNE. WELL MECHANISM. APPLIGATION FILED DEG.10,1907.

Patented Jan, 26, 1909.

INVENTOR one of the We UNITED. STATES PATENT OFFICE.

i nanronjnptirnr, oFnoUs'roN, TEXAS.

- Specification a t am Paar.

Patented Jan. 26,1909.

Application filed December 1t) 1907. 5 Serial No. 405,957.

useful Im rovements in. Well Mechanisms,

of which t e following is a specification.

The invention relatesfto well apparatus. of the t e shown in .my co-pending application Serial 0. 404,969, filed December 3rd, 1907 wherein the pit casing is secured to the top of lcasingsections. Theinvention has for its objects; the provision of an improved and simplified t which an absolutely tight oint is secured between the'ooupling sleeveand the coupling member employed, and the rovision of a couplingwhichshallgivearigi attachment of i the coup the partsand one of maximum strength. One embodiment of the invention is illustrated in the accompanying drawings, wherein The fi fie is a longitudinal section through jg members." I I The invention constitutes a modification of [the invention shown in my coending application, Serial No. 4047969, filed Decemb'er 3rd, 1907, and'j as the departure rclatesj only to the coupling, the rest of the mechanism is not illustrated. Referring to the drawing, lie the pit casing, ,thelow'er end only of which iss'hown, 2 isthe coupling member-which is-acasting riveted to the interior of the pit casing, and provided with the downwardly projectlng flange-3 carrying the coarse spiral thread :4, 5 and 6 are sec tions of the Well casing which extend through the pit casing, 7 is the coupling sleeve threaded to the sections 5 and 6 and provided on its exterior with the coarse thread 8 cooperating with the thread ion the coupling member 2, and 9 are the cutter members which are secured to the casting and which cuts away the material when the e of coupling in pit casing is rotated. The threads 4 and 8 member 2 has rotated a suflicient distance it will be brought to a positive step and the parts thus ocked rigidly together, and a tight joint secured. The taper might of course be omitted, although the construction illustrated and described is preferred.

It will be seen that various modifications in the form of thread used, and the manner of its application might be made withoutavoiding'the broad invention involved. It

will be understood that in this construction,

as in that of my co-pen'ding application, the upper 'well'section 5 is removed after the coupling members 2 and 7 are brought to the position shown in the figure.

Having thus described my invention and illustrated its use, what I' claim as new and desire to secure by Letters. Patent is the following f 1. ,In combination, a pit casing, a couplin member secured thereto and provided with a coarse spiral thread, apair of casing sections, and a coupling sleeve therefor pro-'-- .member secured thereto and provided with a coarse s iral thread, apair'of casing sections, an a coupling sleeve therefor provided on its exterior with 'a spiral thread adaptedto' cooperate with the first mentioned thread, the cooperating threaded -members being tapered.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed Witnesses.

' MAHLON E. LAYNE.

Witnesses:

HARVEY L. LECHNER, ARCHWORTH MARTIN.

" are arranged on an incline. sothat after 'the. 

